Buy One Get One Free

Chicago citation style
Unknown. Buy One Get One Free. Retrieved from the Digital Public Library of America, https://industrydocuments.library.ucsf.edu/tobacco/docs/#id=zphg0026. (Accessed December 13, 2018.)
APA citation style
Unknown, Buy One Get One Free. Retrieved from the Digital Public Library of America, https://industrydocuments.library.ucsf.edu/tobacco/docs/#id=zphg0026
MLA citation style
Unknown. Retrieved from the Digital Public Library of America <https://industrydocuments.library.ucsf.edu/tobacco/docs/#id=zphg0026>.
Note: These citations are programmatically generated and may be incomplete.